PLC蠕虫病毒的实现与防护

Realization and Protection of PLC Worm Virus

可编程逻辑控制器(PLC)在工业自动化控制中的运用越来越普及,导致电脑病毒逐步渗透到工控领域,其已成为工控行业的一种新型威胁,对其进行防护显得越来越重要。主流PLC都配置有以太网口进行通信,经过设计的PLC蠕虫病毒可以利用网络进行传播、复制,造成设备故障。基于此,笔者以西门子SIMATICS7-1200控制器为例分析蠕虫病毒如何对PLC进行感染,并提出可能的解决技术。

Programmable Logic Controller(PLC)is more and more used in industrial production.Computer viruses have gradually penetrated into the industrial control field,and become a new threat in the industrial control industry.It is more and more important to protect them.The mainstream PLC is equipped with Ethernet port and can communicate with it.The designed PLC worm virus can spread and replicate through the network,resulting in equipment failure.This paper takes Siemens SIMATIC S7-1200 controller as an example to analyze how worms infect PLC and propose possible solutions.